Basic etiquette of a waiter

It depends on the restaurant. I don't know the etiquette for a very formal restaurant but, If you are going to somewhere to sit down and eat a meal there are some things that you should always do.

1. Never have your elbows on the table.

2. Place your napkin on your lap.

3. Don't lick your fingers.

4. If your phone rings either excuse yourself or ignore it.